Question

The students in Mrs. Hart’s class were asked how many brothers and sisters they each have. The dot plots below show the results.

Brothers Sisters


Number of Brothers=8 Number of Sisters=16


Which statement is best supported by the data?
Responses
A The distributions of the data for number of brothers and number of sisters are approximately symmetrical.The distributions of the data for number of brothers and number of sisters are approximately symmetrical.
B The data for the number of sisters each student has a smaller range than the data for the number of brothers each student has.The data for the number of sisters each student has a smaller range than the data for the number of brothers each student has.
C The median number of brothers each student has is equal to the median number of sisters each student has.The median number of brothers each student has is equal to the median number of sisters each student has.
D The mode of the number of sisters each student has is greater than the mode of the number of brothers each student has.The mode of the number of sisters each student has is greater than the mode of the number of brothers each student has.

Answer 1

B The data for the number of sisters each student has a smaller range than the data for the number of brothers each student has.

This statement is supported by the dot plots, as the range for the number of sisters (8 to 16) is smaller than the range for the number of brothers (3 to 8).